ValueMap vs Node property | Community
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akbar.ak219
Level 2
Apr 2, 2018 10:36 AM UTC
Solved

ValueMap vs Node property

HI Friends,

Can you pls explain the difference between the below

getProperties.get("propertyName").toString(); and node.getProperty("propertyName");

Thanks in advance

Akbar

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    Julio_Tobar
    Julio_TobarAccepted solution
    Level 3
    Apr 2, 2018 9:01 PM UTC

    Dear @akbareee, you must first understand the technology stack that AEM relies on, which is:

    • OSGi
    • Java Content Repository (JCR)
    • Apache Sling
    • AEM Modules

    You can access content stored in the repository by using APIs from any of the technologies; this would be the first big difference you asked for:

    node.getProperty("propertyName");   --> Provided by JCR technology

    getProperties.get("propertyName").toString();  ---> Provided by Apache Sling Technology

    in case of "getProperties" your basically accessing a "globally available Sling object" whereas "node" must be an instance of Node class.

    Regards,

    View reply

    4 replies

    akbar.ak219Author
    Level 2
    Apr 10, 2018 12:27 PM UTC

    Thanks Julio Tobar, it's really helpful

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    smacdonald2008
    smacdonald2008
    Level 10
    Apr 3, 2018 12:18 AM UTC

    Nice response!

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    Julio_Tobar
    Julio_TobarAccepted solution
    Level 3
    Apr 2, 2018 9:01 PM UTC

    Dear @akbareee, you must first understand the technology stack that AEM relies on, which is:

    • OSGi
    • Java Content Repository (JCR)
    • Apache Sling
    • AEM Modules

    You can access content stored in the repository by using APIs from any of the technologies; this would be the first big difference you asked for:

    node.getProperty("propertyName");   --> Provided by JCR technology

    getProperties.get("propertyName").toString();  ---> Provided by Apache Sling Technology

    in case of "getProperties" your basically accessing a "globally available Sling object" whereas "node" must be an instance of Node class.

    Regards,

    Translate
      joerghoh
      joerghoh
      Employee
      Apr 2, 2018 7:23 PM UTC

      "getProperties" seems odd as variable name ... :-)

      But the difference between these is the type of API; one is using the lowlevel JCR API, while the other one uses the Sling Resource API.

      I wrote a blog post about some years ago, which I consider as still relevant: CQ5 coding patterns: Sling vs JCR (part 1) | Things on a content management system

      Jörg

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